Oh absolutely it would have been irresponsible. But like I said, Harry never even asked for them back. Karrin is the one that brings them up -pretty much at random- in order to go "Fuck you Harry, these are too important to entrust to you and I'm keeping them".
And then when he does bring up the swords (when he suggests bringing one to Demonreach) she responds with "Yo Harry, remember the time you got your best friend crippled for life".
Like, Murphy was just insanely antagonistic about the Swords in Cold Days, because she's too proud to admit that she just doesn't want to use the damn things.
But this is getting pretty off topic so I suggest we stop here.